Question

If 5x-2y=7 and xy=2,then find the value of (5x+2y)^2

Answer 1

Step-by-step explanation:

5x-2y=7-------(1)

XY=2----------(2)

x=2/y---------(3)

now in eq1

5(2/y)-2y=7

10/y-2y=7

10-2y=7y

10=7y+2y

10=5y

y=2

from eq3

x=2/2

x=1

so the ans is x=1,y=2